Improve webpack performance (~ 80ms -> 15ms)

src/utils/patchWebpack.ts

@@ -53,6 +53,18 @@ function patchPush() {
                         return originalMod(module, exports, require);
                     }
 
+                    // There are (at the time of writing) 11 modules exporting the window
+                    // Make these non enumerable to improve webpack search performance
+                    if (module.exports === window) {
+                        Object.defineProperty(require.c, id, {
+                            value: require.c[id],
+                            enumerable: false,
+                            configurable: true,
+                            writable: true
+                        });
+                        return;
+                    }
+
                     for (const callback of listeners) {
                         try {
                             callback(exports);
@@ -65,12 +77,19 @@ function patchPush() {
                             if (filter(exports)) {
                                 subscriptions.delete(filter);
                                 callback(exports);
-                            } else for (const nested in exports) {
+                            } else if (typeof exports === "object") {
+                                if (exports.default && filter(exports.default)) {
+                                    subscriptions.delete(filter);
+                                    callback(exports.default);
+                                }
+
+                                for (const nested in exports) if (nested.length < 3) {
                                     if (exports[nested] && filter(exports[nested])) {
                                         subscriptions.delete(filter);
                                         callback(exports[nested]);
                                     }
                                 }
+                            }
                         } catch (err) {
                             logger.error("Error while firing callback for webpack chunk", err);
                         }

src/webpack/webpack.ts

@@ -44,9 +44,15 @@ export function find(filter: FilterFn, getDefault = true) {
 
         if (filter(mod.exports))
             return mod.exports;
+
+        if (typeof mod.exports !== "object") continue;
+
         if (mod.exports.default && filter(mod.exports.default))
             return getDefault ? mod.exports.default : mod.exports;
-        for (const nestedMod in mod.exports) {
+
+        // is 3 is the longest obfuscated export?
+        // the length check makes search about 20% faster
+        for (const nestedMod in mod.exports) if (nestedMod.length < 3) {
             const nested = mod.exports[nestedMod];
             if (nested && filter(nested)) return nested;
         }